They include injectables (such as Depo-Provera), oral contraceptive pills, patch, ring and the diaphragm. The least effective<span> methods result in 18 or more pregnancies per 100 women in a year, with typical use. They include male and female condoms, withdrawal, sponge, fertility-awareness-based methods, and spermicide.</span>
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Toothpaste<span> is used to promote oral hygiene: it serves as an abrasive that aids in removing the </span>dental<span> plaque and food from the </span>teeth<span>, assists in suppressing halitosis, and delivers active ingredients (most commonly fluoride) to </span>help<span> prevent </span>toothdecay (dental<span> caries) and gum disease (gingivitis).</span>
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Answer:
Risk factors for chronic disease tend to persist and tend to increase.
